split out FilteredStatusViewHolder from StatusBaseViewHolder (#4543)

This is way more efficient than before as less views need to be inflated
and bound for a filtered status to be rendered. It also should fix the
bug where sometimes a `StatusViewHolder` that is set up for showing a
status gets bound to a status that is filtered, leading to a crash.

app/src/main/res/layout/item_status_filtered.xml

@@ -3,7 +3,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/status_filtered_placeholder"
     android:layout_width="match_parent"
-    android:layout_height="match_parent"
+    android:layout_height="wrap_content"
     android:orientation="vertical">
 
     <TextView
@@ -12,11 +12,10 @@
         android:layout_height="wrap_content"
         android:layout_marginTop="8dp"
         android:layout_marginBottom="0dp"
-        android:text="Filter: MyFilter"
         android:textAlignment="center"
         android:textColor="?android:textColorSecondary"
         android:textSize="?attr/status_text_medium"
-        tools:ignore="HardcodedText" />
+        tools:text="Filter: MyFilter" />
 
     <Button
         android:id="@+id/status_filter_show_anyway"

app/src/main/res/layout/item_status_wrapper.xml

@@ -1,13 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:orientation="vertical"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content">
-
-    <include layout="@layout/item_status" />
-
-    <include
-        layout="@layout/item_status_filtered"
-        android:visibility="gone"
-        />
-</FrameLayout>